ES385851A1 - A thin film thermistor. (Machine-translation by Google Translate, not legally binding) - Google Patents
A thin film thermistor. (Machine-translation by Google Translate, not legally binding)Info
- Publication number
- ES385851A1 ES385851A1 ES385851A ES385851A ES385851A1 ES 385851 A1 ES385851 A1 ES 385851A1 ES 385851 A ES385851 A ES 385851A ES 385851 A ES385851 A ES 385851A ES 385851 A1 ES385851 A1 ES 385851A1
- Authority
- ES
- Spain
- Prior art keywords
- electrode
- deposited
- sputtering
- thermistor
- thin film
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/04—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having negative temperature coefficient
- H01C7/041—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having negative temperature coefficient formed as one or more layers or coatings
Abstract
A thin film thermistor is formed by first depositing on a clean insulating substrate 1 (Fig. 1) a pair of spaced apart contact pads 2, 3 and an elongate base electrode 5 which contacts one and is spaced from the other pad, then sputtering a thermistor material 6 to cover the electrode except where it abuts its contact pad, and finally depositing by sublimation or evaporation an elongate top electrode 7 which crosses the base electrode and extends to the other contact pad 2. In the example the substrate is of glass or alumina, the low resistance pads 2, 3 of chromium below and gold above, electrode 5 of chromium or manganese below and silver, gold or nickel above, and electrode 7 of pure silver. Layer 6 may be deposited by triode sputtering in argon, possibly containing a trace of hydrogen or oxygen, as described in Specification 1,104,770 using a target consisting of a 5 : 1 Mn 2 O 3 : NiO mixture and is subsequently stabilized by heating in vacuo or air. A protective layer of silicon monoxide is finally deposited to leave only the bonding areas exposed. In an alternative construction the lower electrode is comb-shaped (Fig. 2, not shown) or of serpentine form to allow adjustment of the thermistor resistance by cutting to isolate one or more of the teeth of the comb or limbs of the serpentine. Adjustment may instead be effected by microengraving to eliminate parts of the upper electrode. The contact pads and higher resistance electrodes are deposited in any sequence by evaporation or sputtering through masking so as to overlap at their ends.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB5762669 | 1969-11-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
ES385851A1 true ES385851A1 (en) | 1973-05-01 |
Family
ID=10479622
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES385851A Expired ES385851A1 (en) | 1969-11-25 | 1970-11-24 | A thin film thermistor. (Machine-translation by Google Translate, not legally binding) |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE2056582A1 (en) |
ES (1) | ES385851A1 (en) |
GB (1) | GB1267107A (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL181156C (en) * | 1975-09-25 | 1987-06-16 | Gen Electric | METHOD FOR MANUFACTURING A METAL OXIDE VARISTOR |
US4200970A (en) * | 1977-04-14 | 1980-05-06 | Milton Schonberger | Method of adjusting resistance of a thermistor |
JPS63192203A (en) * | 1987-02-04 | 1988-08-09 | 日本鋼管株式会社 | Thin film temperature sensor |
-
1969
- 1969-11-25 GB GB1267107D patent/GB1267107A/en not_active Expired
-
1970
- 1970-11-17 DE DE19702056582 patent/DE2056582A1/en active Pending
- 1970-11-24 ES ES385851A patent/ES385851A1/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE2056582A1 (en) | 1971-05-27 |
GB1267107A (en) | 1972-03-15 |
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